 /*******************************************************************************
  * Copyright (c) 2006, 2007 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.core.internal.databinding.observable.tree;

 /**
  * Context sensitive update request for whether elements have children.
  *
  * @since 3.3
  */
 public interface IHasChildrenUpdate extends IViewerUpdate {

     /**
      * The elements this request is for specified as tree paths. An empty path
      * identifies the root element.
      *
      * @return elements as tree paths
      */
     public TreePath[] getElements();

     /**
      * Sets whether the given element has children.
      *
      * @param element
      * tree path to element, or empty for root element
      * @param hasChildren
      * whether it has children
      */
     public void setHasChilren(TreePath element, boolean hasChildren);
 }

